4PLANET IMPACT / ISSUE

Coral bleaching and mortality

Marine heat stress can cause coral bleaching and, at severe or prolonged levels, mortality of heat-sensitive corals.

Why it matters

Heat stress is a major threat to coral reefs, but satellite heat stress is not itself proof that a particular reef has died.

What the sources establish

NOAA Coral Reef Watch reports that bleaching-level marine heat stress can cause widespread coral bleaching and, at higher levels, mortality of heat-sensitive corals.
Source: https://www.coralreefwatch.noaa.gov/satellite/research/coral_bleaching_report.php

Projects working on it

Abu Dhabi Marine Restoration — Environment Agency – Abu Dhabi, Emirate of Abu Dhabi, United Arab Emirates
Coral Gardeners Reef Restoration — Coral Gardeners, French Polynesia, Fiji and Thailand
Ecosystem Restoration and Management in Sri Lanka — IUCN × INSEE Sri Lanka restoration partnership, Koggala, Serakkuliya, Unawatuna and Aruwakkalu, Sri Lanka
Florida Keys Coral Restoration — Coral Restoration Foundation, Florida Keys
Procoreef — Procoreef, Isla Fuerte, Colombia

Organisations

Known and not established

Heat stress and bleaching alerts are not the same as observed coral mortality at a specific reef.
This issue record is source-grounded context, not proof that any particular project, action or intervention is effective.

Sources

coralreefwatch.noaa.gov

Truth boundary. Listing does not imply 4PLANET partnership or endorsement. Source-reported figures are not independently verified by 4PLANET. Delivery, outcome and verification remain separate states.

Approaches associated with this problem

Connected seascape restoration — Integrated restoration and management across connected marine, coastal and terrestrial systems.
Coral nursery and monitored outplanting — Coral propagation, nursery production, outplanting and monitoring.

Published by 4PLANET · Source-aware public record · How records are reviewed